A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5910-01-602-1663
NSN 5895-01-458-6497
NSN 6135-01-433-2062
NSN 5950-01-013-9382
NSN 2925-01-267-1598
NSN 6105-01-507-7442
NSN 2925-00-707-6770
NSN 5996-01-138-4291
NSN 5998-01-427-8462
NSN 7035-01-534-7074
NSN 5930-01-520-7436
NSN 5945-01-592-7935